Rosemount™ 385+pH/ORP Sensors
Instruction ManualLIQ-MAN-385+
Rev. JMarch 2017
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Emerson designs, manufactures and tests its products to meet many national and international stan-dards. Because these sensors are sophisticated technical products, you MUST properly install, use,and maintain them to ensure they continue to operate within their normal specifications. Thefollowing instructions MUST be adhered to and integrated into your safety program when installing,using, and maintaining Rosemount products. Failure to follow the proper instructions may causeany one of the following situations to occur: loss of life; personal injury; property damage; damageto this sensor; and warranty invalidation.• Read all instructions prior to installing, operating, and servicing the product.• If you do not understand any of the instructions, contact your Emerson representative for
clarification.• Follow all warnings, cautions, and instructions marked on and supplied with the product.• Inform and educate your personnel in the proper installation, operation, and maintenance
of the product.• Install your equipment as specified in the Installation Instructions of the appropriate
Instruction Manual and per applicable local and national codes. Connect all products to the proper electrical and pressure sources.
• To ensure proper performance, use qualified personnel to install, operate, update, program, and maintain the product.
• When replacement parts are required, ensure that qualified people use replacement partsspecified by Emerson. Unauthorized parts and procedures can affect the product's performance, place the safe operation of your process at risk, and VOID YOUR WARRANTY.Third-party substitutions may result in fire, electrical hazards, or improper operation.
• Ensure that all equipment doors are closed and protective covers are in place, except whenmaintenance is being performed by qualified persons, to prevent electrical shock and personal injury.
The information contained in this document is subject to change without notice.
Essential InstructionsRead this page before proceeding!
Sensor/Process Application CompatibilityThe wetted sensor materials may not be compatible with process composition and operating conditions. Application compatibility is entirely the responsibility of the user.
CAUTION
Hazardous Area InstallationNThis sensor is not Intrinsically Safe. or Explosion Proof. Installations near flammable liquids or inhazardous area locations must be carefully evaluated by qualified on site safety personnel.
To secure and maintain an intrinsically safe installation, an appropriate transmitter/safetybarrier/sensor combi nation must be used. The installation system must be in accordance with thegoverning approval agency (FM, CSA or BASEEFA/CENELEC) hazardous area classification require-ments. Consult your transmitter instruc tion manual for details.
Proper installation, operation and servicing of this sensor in a Hazardous Area Instal lation is entirelythe responsibility of the user.
DANGER
WARNING
Retractable sensors must not be inserted nor retracted when process pressures are in excess of 64 psig (542kPa)
This manual contains instructions for installation and operation of the Rosemount 385+pH/ORP Sensors.The following list provides concerning all revisions of this document.
Rev. Level Date NotesA 02/01 This is the initial release of the product manual. The manual has
been reformatted to reflect the Emerson documentation style and updated to reflect any changes in the product offering.
B 05/02 Drawings updated throughoutC 05/03 Drawing 40385+02 updated to rev. C; added drawing
41055119 — both on page 9.D 09/04 Updated wiring diagrams and Table 5-2E 10/04 Added 1055 single input wiring diagram.F 03/05 ORP info revision.G 05/05 Fixed LED font mis-print on page 16.H 03/06 Added a note on page 6.I 05/09 Updated for SMART sensors.J 03/17 Reformatted to reflect the latest Emerson documentation style
and updated the ordering information, EC Declaration of conformity, FM Installation drawing, and Accessories.
About This Document
ContentsSection 1: Description and Specifications
1.1 Features and Applications ....................................................................................1
1.2 Performance and Specifications ...........................................................................2
1.3 Ordering Information...........................................................................................3
1.4 Product Certifications ..........................................................................................4
Section 2: Installation2.1 Unpacking and Inspection ...................................................................................5
2.2 Mechanical Installation ........................................................................................5
2.3 Electrical Installation..........................................................................................10
Section 3: Startup and Calibration3.1 Startup ..............................................................................................................17
3.2 pH Calibration Using Buffer Solutions or Grab Samples ......................................17
3.3 ORP Calibration .................................................................................................17
Section 4: Maintenance4.1 Maintenance......................................................................................................19
4.2 Sensor Removal .................................................................................................19
4.3 pH Electrode Cleaning .......................................................................................20
4.4 Platinum Electrode Cleaning ..............................................................................20
4.5 Sensor Tube Replacement (Code -02).................................................................21
Section 5: Diagnostics and Troubleshooting5.1 Model 54/3081 pH Diagnostics ..........................................................................25
5.2 Troubleshooting ................................................................................................25
5.3 Rosemount 1056/1057 SMART pH Diagnostics ..................................................26
Section 6: Accessories6.1 Accessories ........................................................................................................29
EC Declaration of Conformity.............................................................................31
Intrisicallly Safe Sensor Installation Drawing - FM ................................33
Instruction Manual Table of ContentsLIQ-MAN-385+ March 2017
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ii Table of Contents
Section 1: Description and Specifications• SMART enabled
• Retractable version allows removal and replacement under pressure without process shut-down.
• Long-life, triple junction reference electrode provides longer service life in applications wherepoisoning ions are present.
• Disposable tefzel and titanium design provides maximum chemical resistance and econom-ical advantage where minimum troubleshooting and maintenance downtime are of primeimportance.
1.1 Features and ApplicationsThe Rosemount 385+ Sensor measures the pH or ORP (Oxidation Reduction Potential) of aqueous solutions in pipelines, open tanks, or ponds. It is suitable for applications where a low cost, industrial, disposable sensor is required. The combination electrode features a peripheral ceramicjunction. The triple junction reference cell provides longer life in processes containing sugar, ammonia, chlorides, sulfides or other poisoning ions. The Rosemount 385+ body is constructed ofmolded, chemically resistant Tefzel in two standard body versions.
The retraction version is housed in a titanium tube, with a plug-in style surface mount preamplifierin a weatherproof junction box. It is designed for use with a standard 1-1/2 in. ball valve assembly for process mounting where a separate sample stream is difficult or impossible to provide. The entire installation process is accomplished without line depressurization and minimal process fluidloss. Upon sensor removal, from the ball valve, maintenance and replacement is easy.
The insertion/submersion version has two body configurations: 25 ft (7.6 m) integral cable and preamplifier; 15 ft (4.5) integral cable for use with remote preamplifier.
Description and Specifications 1
Instruction Manual Description and SpecificationsLIQ-MAN-385+ March 2017
2 Description and Specifications
Description and Specifications Instruction ManualMarch 2017 LIQ-MAN-385+
Table 1-2: Rosemount 385+ sensor specifications
Measured RangepH range 0 to 14 pH, GPHT ACCUGLASS
ORP range -1500 mV to 1500 mV
Maximum Pressure at Retraction or Insertion (ball valve version)542 KPa abs (64 psig)
Maximum Process Pressure and Temperature790 KPa abs (100 psig) at 100 °C (212 °F)
Temperature Compensation(pH only) 0 to 100°C (32 to 212°F)
Wetted MaterialsTefzel, titanium, EPDM, 316 SS and Teflon (Code 02), Viton, glass, ceramic and (ORP only) platinum.
Weight/Shipping WeightSubmersion/insertion 1.6 lb/2.8 lb (0.7 kg/1.25 kg)
Retraction 6 lb/11 lb (2.7 kg/5.0 kg)
Ball Valve 5 lb/10 lb (2.25 kg/4.5 kg)
Process ConnectionsWith ball valve 1-1/2 in.
Without ball valve 1 in.
Cable LengthCode 02 Requires interconnecting cable P/N 9200273 (Unprepped) or P/N 23646-01 (Prepped)
Code 03 25 ft. Integral Cable
Code 04 15 ft. Integral Cable
1.2 Performance and Specifications
pH Range Option 10 Option 11
0-2 pH 94% 94%
2-12 pH 99% 97%
12-13 pH 97% 98%
13-14 pH 92% 98%
Table 1-1: Percent linearity over pH
Description and Specifications 3
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1.3 Ordering Information
Table 1-3: Rosemount 385+ ordering information
Model Sensor type385+ pH/ORP Sensor
Body Configuration02 Retractable with Sensor Head Junction Box, Preamplifier, and Process Connector (1)
03 Insertion/Submersion with Integral Preamplifier and 25 ft. (7.6m) Cable (1) (2)
04 Insertion/Submersion for use with Remote Preamplifier and 15 ft. (2)
Combination Electrode10 pH - GPLR Glass11 High pH Glass12 Platinum ORPTypical Model Number: 385+-03-10
1. Preamplifier is SMART for pH options only. A standard preamplifier is used with ORP sensors.2. First time installations require a 1 x 1 inch NPT Process Connector (see accessories).
Description and Specifications Instruction ManualMarch 2017 LIQ-MAN-385+
4 Description and Specifications
1.4 Product CertificationsPlease see online certificates for further details.
IECEx
Sensors without preamp (pH and ORP) – Ex ia IIC T4 Ga (-20°C ≤ Ta ≤ +60°C)
Sensors with preamp (pH only) – Ex ia IIC T4 Ga (-20°C ≤ Ta ≤ +60°C)
Sensors with standard preamp (ORP only) – Ex ia IIC T4 Ga (-20°C ≤ Ta ≤ +80°C) or Ex ia IIC T5 Ga
(-20°C ≤ Ta ≤ +40°C)
Per standards IEC60079-0 : 2011, IEC 60079-11 : 2011
ATEX
Sensors without preamp (pH and ORP) – II 1 G Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C)
Sensors with SMART preamp (pH only ) – II 1 G Ex ia IIC T4 Ga (-20˚C ≤ Ta ≤ +60 °C)
Sensors with standard preamp (ORP only) – II 1 G Ex ia IIC T4 Ga (-20˚C ≤ Ta ≤ +80˚C) or
II 1 G Ex ia IIC T5 Ga (-20˚C ≤ Ta ≤ +40˚C)
Per standards EN 60079-0: 2012+A11:2013, EN 60079-11:2012
FM
See online FM Certificate of Compliance for applicable sensor options:
Intrinsically Safe for use in Class I, II, and III, Division 1, Groups A, B, C, D, E, F, and G; Temperature Class T6 Ta = -20 °C to +60 °C
Intrinsically Safe for use in Class I, Zone 0, AEx ia IIC T6 Ta = -20 °C to +60 °C
Nonincendive for use in Class I, Division 2, Groups A, B, C, and D; Temperature Class T6 Ta = -20 °Cto +60 °C
Suitable for use in Class II and III, Division 2, Groups E, F, and G; Temperature Class T6 Ta = -20 °C to +60 °C Hazardous (Classified) Locations
IS/I,II,III/1/ABCDEFG/T6 Ta = 60°C - 1400332; Entity; I/0/AEx ia IIC/T6 Ta = 60 °C - 1400332; Entity;NI/I/2/ABCD/T6 Ta = 60 °C; S/II,III/2/EFG/T6 Ta = 60 °C
Per standards 3600:1998, 3610:2010, 3611:2004, 3810:2005
CSA
See online CSA Certificate of Compliance for applicable sensor options:
Intrinsically Safe:
Class I, Division 1, Groups ABCD; Class II, Division 1, Groups EFG; Class III; Class I, Division 2, GroupsABCD; Ambient temperature rating -20 °C to +60 °C; Ex ia IIC; T6
Intrinsically Safe and Non-Incendive:
Class I, Division 1, Groups ABCD; Class II, Division 1, Groups EFG; Class III; Class I, Division 2, GroupsABCD; Ex ia IIC; T6; Ambient temperature rating -20 °C to +60 °C: (Simple Apparatus)
Per standards C22.2 No. 0-10, C22.2 No. 0.4-M2004, C22.2 No. 94-M1991, C22.2 No. 142 – M1987,C22.2 No 157 – M1992, CAN/CSA E60079-0:07, CAN/CSA E60079- 11:02, UL50 11th Ed, UL508 17th Ed, UL913 7th Ed, UL 60079-0: 2005, UL 60079-11: 2002
Installation 5
Section 2: Installation
Instruction Manual InstallationLIQ-MAN-385+ March 2017
2.1 Unpacking and InspectionInspect the outside of the carton for any damage. If damage is detected, contact the carrier immediately. Inspect the instrument and hardware. Make sure all items in the packing list are present and in good condition. Notify the factory if any part is missing.
2.2 Mechanical InstallationThe Rosemount 385+ is available in two versions, the retraction version (Code 02) and the insertion/submersion version (Code 03, & 04). Please refer to the appropriate section below.
2.2.1 Retraction Option (Code option 02)
The Rosemount 385+ sensor may be installed through a weldalet or in a pipe tee or “Y”, as shownin Figure 2-1, when used with a ball valve. Insert the end of the sensor to a depth sufficient to ensurethat the glass bulb is continuously wetted by the process fluid.
The sensor can also be inserted directly into the process without the use of a ball valve for applications not requiring continuous operation during sensor maintenance (Figure 2-2).
Allow sufficient room for safe retraction and insertion of the sensor. personnel should have room for stable footing while performing removal or insertion of the sensor.
The sensor must be mounted within 10-90 degrees of the horizontal with the tip pointed downward, thus keeping air bubbles out of the pH sensitive glass bulb. Bubbles settled in the glassbulb disrupt the electrical continuity between the pH sensitive glass and the silver/silver chloride measuring element.
If the retraction version is to be installed without a ball valve follow the installation procedure for insertion service (Section 2.2.2). Perform the following steps for sensor installation through a ballvalve:
1. Carefully remove the liquid filled rubber boot which protects the glass electrode and keepsthe liquid junction wet during shipping and storage. Discard the liquid and boot. Make surethe lubricated O-ring is in place in the groove inside the male connector on the sensor body(Figure 4-1, item A).
WARNING
Glass electrode must be wetted at all times (in storage and in line) to maximize sensor life.
Save the original packing cartons and materials as most carriers require proof of damage due to mishan-dling, etc. Also, if it is necessary to return the instrument to the factory, you must pack the instrument inthe same manner as it was received. Refer to Section 6.0 for instructions.
NOTICE
Buffer solution, in the vinyl boot, may cause skin or eye irritation.
CAUTION
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Installation Instruction ManualMarch 2017 LIQ-MAN-385+
2. With the male connector on the sensor’s body, insert the sensor into the ball valve until itgently touches the closed valve. The molded electrode guard will protect the glass bulb from breakage.
3. Thread the male connector body tightly into the ball valve assembly. DO NOT tighten thehex nut on the male connector body; doing so would not allow the sensor to be inserted through the ball valve.
4. Pull back hard on the sensor assembly, as if trying to remove the sensor, to be certain thatthe sensor cannot come free of the ball valve assembly. The built-in retraction stop will buttagainst the shoulder of the male connector if properly installed.
5. After confirming that the sensor assembly is properly secured by the valve assembly, the valve may be opened and the sensor positioned into the process at the desired depth andorientation.
6. While holding the sensor in position, tighten the hex nut of the male connector to firmly secure the sensor in place. When the hex nut is tightened, the Teflon ferrule inside the compression fitting clamps the sensor tube. (See Figure 4-2.)
2.2.2 Submersion/Insertion Option
Code Option -03 & -04). Figure 2-3 and Figure 2-4. The Rosemount 385+ may be installed througha weldalet or a pipe tee or “Y” when used with a process connector (P/N 23166-00-01). For submersion service, a process connector (P/N 23166-00-01 or 9510066) may be used with a water tight 1 in. schedule 80 CPVC or PVDF standpipe conduit. Refer to Figure 2-5. Tapered threadsin plastic tend to loosen after installation. It is therefore recommended that TEFLON tape be used on the threads and that the tightness of the connection be checked frequently to assure that no loosening has occurred. The sensor should be installed within 80° of vertical, with the electrode facing down.
The sensor must be captured by the valve assembly and the male connector so that it cannot be blownfree by process pressure if mishandled during insertion or retraction.
CAUTION
Over tightening the hex nut may damage the ferrule.
CAUTION
A stainless steel ferrule is available if the TEFLON ferrule does not inadequately grip. When using themetallic ferrule, care must be taken to avoid over tightening and damaging the sensor tube. If the maleconnector leaks during insertion or retraction, replace the O-ring in the male connector.
NOTICE
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Figure 2-1: Typical Mounting Details-Retraction Version
Figure 2-2: Dimensional Drawing Retraction Version (Code 02)
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Figure 2-3: Dimensional Drawing Submersion/Insertion Version (Code -03, -04)
Figure 2-4: Submersion Accessory (Code 03, 04)
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Figure 2-5: Submersion Installations, Handrail Mounting Assembly (P/N 11275-01)
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2.3 Electrical InstallationMake electrical connections as shown on Figures 2-6 through 2-14 using the following guidelines:
1. Pay particular attention to the analyzer or transmitter model number when following details on the wiring diagrams to ensure that the connections are made to the proper terminals.
2. Use Rosemount custom cable PN 9200273.
3. The maximum distance from the sensor to the analyzer is 15 ft without an integral preamplifier.
4. Signal cable should be run in a dedicated conduit and should be kept away from AC powerlines.
For additional wiring information on this product, including sensor combinations not shown here,please refer to the Liquid Transmitter Wiring Diagrams.
Figure 2-6: Rosemount 385+-02 Sensor Wiring to Rosemount 5081 Transmitter
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Figure 2-7: Rosemount 385+-03 Sensor Wiring to Rosemount 5081 Transmitter
Figure 2-8: Rosemount 385+-04 Sensor Wiring to Rosemount 5081 Transmitter
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Installation Instruction ManualMarch 2017 LIQ-MAN-385+
Figure 2-9: Rosemount 385+-02 sensor Wiring to Rosemount 1056/56/1057 Transmitters
Figure 2-10: Rosemount 385+-03 Sensor Wiring to Rosemount 1056/56/1057 Transmitters
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Figure 2-11: Rosemount 385+-04 Sensor Wiring to Rosemount 1056/56/1057 Transmitters
Figure 2-12: Wiring Details - Submersion/Insertion (Code 03 & 04)
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14 Installation
Figure 2-13: Wiring Rosemount 385+-02 Sensor to Rosemount 1055-11-22-32 throughRemote Junction Box
Figure 2-14: Wiring Retraction Version (Code-02)
Figure 2-15: Wiring Details - Remote J-Box for Extension Cable
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Figure 2-16: Wiring Details - Remote J-Box with Preamp
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16 Installation
3.1 StartupTo obtain best accuracy, the sensor must be calibrated as a loop with the transmitter. Please referto the transmitter manual for proper calibration and setup procedures. Example of 1056 start-up shown below.
3.2 pH Calibration Using Buffer Solutions or Grab SamplesThe loop may be calibrated with the sensor’s measuring tip submersed in standard pH buffer solutions (two point calibration) or with a process grab sample of a known pH value (one point standardization). Please refer to the corresponding transmitter manuals for proper procedures.
3.3 ORP CalibrationAn ORP loop is best calibrated using an ORP standard solution.
3.3.1 Quinhydrone Solution
A commonly used ORP standard solution is a saturated quinhydrone solution. This can be made by
simply adding a few quinhydrone crystals to either a 4 pH or a 7 pH buffer. Quinhydrone is only
sightly soluble so only a few crystals will be required. The solution will have a yellow color. The
resulting potentials should be within ±20 millivolts of the value shown in Table 3-1. The ORP value
of saturated quinhydrone solution is not stable over long periods of time and therefore new
solutions should be made each time they are used.
Section 3: Startup and Calibration
pH 4 pH 7
Temperature °C 20 25 30 20 25 30
Millivolt Potential 268 264 260 94 87 80
Table 3-1: ORP of Saturated Quinhydrone Solution
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Startup and Calibration 17
3.3.2 Ferric-Ferrous Ammonium Sulfate Solution
Although this solution is not as easy to prepare as the quinhydrone solution in Section 3.3.1, it
offers a much more stable solution which will maintain its millivolt value for approximately one
year when stored in a glass container.
To prepare solution, dissolve 39.2 grams of reagent grade ferrous ammonium sulfate [Fe(SO4) •
(NH)2SO4 • 6H2O] and 48.2 grams of reagent grade ferric ammonium sulfate [FeNH4(SO4)2 •
12H2O] in approximately 700 milliliters of water (distilled water is preferred, but tap water is
acceptable). Slowly and carefully add 56.2 milliliters of concentrated sulfuric acid. Add sufficient
water to bring the total solution volume up to 1,000 milliliters. This solution (ferric-ferrous
ammonium sulfate) will produce a nominal ORP of 476 ±20 mV at 25°C. Some tolerance in mV
values is to be expected due to the rather large liquid reference junction potentials which can arise
when measuring this strongly acidic and concentrated solution. However, if the measuring
electrodes are kept clean and in good operating condition, consistent repeatable calibrations can
be achieved.
The solution used during the following check is an acid and should be handled with care. Follow thedirections of the acid manu facturer. Wear the proper equip ment. Do not let the solution come incontact with skin or clothing. If contact with skin is made, immediately rinse with cleanwater.
CAUTION
Most industrial applications have a number of ORP reactions occurring in sequence or simultaneously.There can be several components that are oxidized or reduced by the reagents that are used. Theoreti-cally, the ORP potential is absolute because it is the result of the oxidation-reduction equilibrium.However, the actual measured potential is dependent on many factors, including the condition of thesurface of the ORP platinum electrode. Therefore, the sensor should be allowed 1-2 hours to become“conditioned” to the stream to be measured when first setting up or after being cleaned.
NOTICE
Startup and Calibration Instruction ManualMarch 2017 LIQ-MAN-385+
18 Startup and Calibration
4.1 MaintenanceThe Rosemount 385+ Sensor is a disposal type sensor and therefore requires only periodic cleaningand calibration. If the sensor has failed, it should be discarded and replaced.
4.2 Sensor RemovalPlease refer to the appropriate paragraph for instructions regarding removal of the sensor for periodic maintenance.
4.2.1 Retractable Version (Code-02)
1. Be certain system pressure at the sensor is below 64 psig (442 kPa) before proceeding withthe retraction. It is also recommended that the personnel wear a face shield and have a stable footing. Refer to Figure 4-1.
2. Push in on the sensor using the top of the J-box and slowly loosen the hex nut (B) of the process end male connector (A).
3. When the hex nut is loose enough, slowly ease the sensor back completely until the retraction stop collar is reached.
4. Close the ball valve slowly. If there is resistance, the valve may be hitting the sensor. Doublecheck that the sensor has been retracted to the retraction.
5. The Male Connector Body (A) may now be completely unthreaded from the reducing coupling and the sensor removed for servicing stop collar.
Section 4: Maintenance
WARNING
System pressure may cause the sensor to blow out with great force unless care is taken during removal. Make sure the following steps are adhered to.
Do not remove nut at this time.
CAUTION
Failure to withdraw the sensor completely may result in damage to the sensor when the valve is closed.
CAUTION
WARNING
Before removing the sensor from the ball valve, be absolutely certain that the ball valve is fully closed. Leakage from the male connector threads may indicate that the male connector is still under pressure. Leakage through a partially open valve could be hazardous, however with the ball valve closed, some residual process fluid may leak from the connector's pipe threads.
If the male connector leaks during insertion or retraction, replace the O-ring (PN 9550099) in the maleconnector A.
CAUTION
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4.2.2 Insertion/Submersion Version (Code -03 and -04 )
Remove the sensor from process for cleaning, calibration or replacement.
4.3 pH Electrode CleaningIf the electrode is coated or dirty, it may be cleaned as follows:
1. Remove the sensor from process as instructed in Section 4.2.
2. Wipe the glass bulb with a soft, clean, lint free cloth or tissue. If this does not remove thedirt or coating, proceed to step 3. If the sensor appears to be clean, go to step 5.
3. Wash the glass bulb in a strong detergent solution and thoroughly rinse with tap water. Ifthe bulb still appears to have a coating, proceed to step 4.
4. Following the caution above, wash the glass bulb in dilute 5% hydrochloric acid solution and then rinse it thoroughly in tap water. Replace the sensor if it cannot be cleaned. If theglass bulb appears clean, proceed to step 5.
5. Buffer calibrate the sensor (Refer to Section 3.0). If the sensor appears to respond sluggishly to pH change, soaking it overnight in a weak acid solution (5% hydrochloric acid)may improve its response. Be sure to follow the CAUTION above and to rinse the sensor’stip thoroughly with tap water. If the sensor will not calibrate, it must be replaced.
4.4 Platinum Electrode CleaningRemove any film or dirt by wiping the electrodes platinum band with a clean, lint free, cloth. If needed, a strong detergent should be used to remove any remaining dirt or film.
Platinum electrodes can become poisoned by cyanide or sulfide compounds. However, processesinvolving these compounds (such as cyanide destruction) will destroy all the cyanides or sulfides before they can react with the platinum.
Should poisoning occur, the electrode can be restored to normal operation by polishing the platinum (metallic) surface with moistened baking soda (after a strong detergent wash to removeany film on the platinum surface).
WARNING
Before removing the sensor, be absolutely certain that the process pressure is reduced to 0 psig andthe process temperature is lowered to a safe level!
The solution used in the following step is an acid and should be handled with care. Follow the directionsof the acid manufacturer. Wear the proper protective equipment. Do not let the solution come incontact with skin or clothing. If contact with the skin is made, immediately rinse with clean water.
CAUTION
4.5 Sensor Tube Replacement (Code -02)Replacement of the retraction versions sensor tube assembly involves the removal and installationof two sets of male connectors; one at the process end of the sensor, and the other at the junctionbox end. Refer to Section 4.2 for proper removal of the sensor from process.
1. Remove sensor from process before proceeding. The junction box with attached male connector must be recovered from the old sensor for reuse. Unscrew the junction box coverand set aside. Disconnect electrical connections from printed circuit board inside junctionbox. Disconnect BNC connector to preamp. Unscrew hex nut (D) from male connector body (C). Separate junction box from used sensor. Set aside.
2. Pry off split ferrule from sensor and set aside for reuse. Remove hex nut (D) and set aside for reuse. Check that the internal O-ring is in place in the male connector body (C) attachedto the junction box.
3. Remove hex nut (B) from male connector body (A) at process end of sensor and set aside.Slide the Teflon ferrule and the male connector off sensor in the direction of junction boxand set aside. Discard sensor tube.
4. Discard used O-ring from male connector body (A). Coat new O-ring with a thin film of theO-ring lubricant provided. Position it in the machined O-ring groove in place of the discarded O-ring.
5. Cover the 1in. MNPT pipe threads of the male connector body (A) with TEFLON tape (notprovided) to protect them from galling during reinstallation.
6. Pass the wires from the new sensor through the process end male connector (A). Make sure that the beveled edge of the ferrule faces the process end of the sensor. Snug the hexnut (B) to keep it in place. Do not tighten down fully on the hex nut at this time.
7. Pass the wires from the new sensor through the hex nut (D), the split ferrule (from the oldsensor), male connector body (C), O-ring, and through the junction box from the “neck”opening and out to the printed circuit board in the junction box. Butt the ferrule’s bevelededge and the sensor tube against the junction male connector (C). Screw the hex nut (D)by hand until the tube is “locked” into the male connector body. Make sure that the maleconnector body (C) is sufficiently tightened. The sensor will “click” into place by pulling the sensor tube away from the junction box, but will not move from side to side or pull clear of the male connector. If the sensor tube is correctly attached to the junction box, wrench tighten hex nut (D) on male connector body (C) (see Figure 4-1). Do not put the sensor tube in a vise or use a pipe wrench to tighten the hardware as these will damage the sensor. If sensor tube is not correctly attached to the junction box, loosen hex nut (D)and repeat.
If stainless steel ferrule was used, male connector body (A) will have to be dis carded with the sensortube.
NOTICE
Make sure lubricant does not contact any part of the sensor tip particularly the glass bulb.
CAUTION
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22 Maintenance
8. Connect the sensor wires to the terminals on the printed circuit board in the junction boxin the manner recommended on the junction box cover, or see Figure 2-4. Reattach the BNC connector to the preamp. Screw on the cover of the junction box.
9. Insert the sensor in the process fitting. Stop it against the closed ball valve. Slide the processend male connector down the sensor tube to mate with the process fitting. Tightenthe male connector into the process fitting.
10. Pull back hard on the sensor assembly, as if trying to remove the sensor, to be certain thatthe sensor cannot come free from the valve assembly and male connector. The built-in retraction stop collar at the end of the sensor will butt against the shoulder of the male connector.
11. Open ball valve and position the sensor at the desired insertion depth and orientation. Using a crescent or open end wrench, tighten the hex nut (B) to secure the sensor in place.
If the sensor is to be stored, the rubber boot should be filled with 7 pH buffer solution and replacedon sensor tip until ready to use.
A stainless steel ferrule is available if the TEFLON ferrule does not adequately grip. When using themetallic ferrule, be careful and avoid over tightening. This can damage the sensor tube.
NOTICE
If the male connector leaks during insertion or retraction, replace the O-ring (PN 9550099) in the maleconnector body (A).
CAUTION
Figure 4-1: Sensor Tube Replacement
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Maintenance 23
Figure 4-2: Male Connector Tightening Diagram
24 Maintenance
Maintenance Instruction ManualMarch 2017 LIQ-MAN-385+
Instruction Manual Diagnostics and TroubleshootingLIQ-MAN-385+ March 2017
Diagnostics and Troubleshooting 25
Table 7-1: Troubleshooting
5.1 Model 54/3081 pH DiagnosticsThe Models 54 and 54e Transmitters and Models 3081, 4081, and 5081 pH Transmitters automaically search for fault conditions that would cause an error in the measured pH value. Referto the respective manual for a complete description of the transmitter’s fault conditions.
5.2 TroubleshootingTable 5-1, below, lists the diagnostic messages that indicate a possible sensor problem. A more complete description of the problem and a suggested remedy corresponding to each message is also listed.
Section 5: Diagnostics and Troubleshooting
Note: For any repair or warranty inquiries please contact our Customer Care group.
Diagnostics and Troubleshooting Instruction ManualMarch 2017 LIQ-MAN-385+
26 Diagnostics and Troubleshooting
5.3 Rosemount 1056/1057 SMART pH DiagnosticsRosemount 1056 and 1057 transmitters automatically search for SMART sensors. Once the SMARTsensor is detected, 385+ (-03), and communication is established the start-up, screen will appear,figure 5-1. Start-up and calibration of pH/ORP are described on page 16. Up to five (5) calibrationdata sets can be found under DIAG/sensorX/calibration history, see figure 5-2.
The calibration data contain slope, offset, temperature, method of calibration (page 16), glass impedance, reference impedance and time stamp between the calibration, figure 5-3. Advanced diagnostic data can be used for preventive maintenance, replacement and timely troubleshoot.
Figure 5-1: SMART start-up screen
Figure 5-2: Calibration History menu on Rosemount 1056
Figure 5-3: Calibration History screen
Please refer to the corresponding installment manual for detailed description.
The factory calibration data can be found on the bottom of Calibration History menu figure 5-2. Usekey-pad to scroll down to the bottom, find Factory Cal. line and press enter. The factory calibrationscreen will appear, figure 5-4. It contains the serial number of the sensor, slope, offset, temperatureoffset, glass impedance and reference inductance value. It's possible to retore the calibration settings to factory default. Please, refer to corresponding instrument manual for correct procedure.
Figure 5-4: Factory Calibration
Instruction Manual Diagnostics and TroubleshootingLIQ-MAN-385+ March 2017
Diagnostics and Troubleshooting 27
28 Diagnostics and Troubleshooting
Diagnostics and Troubleshooting Instruction ManualMarch 2017 LIQ-MAN-385+
6.1 Accessories
Accessories 29
Table 6-1: Accessories for Rosemount 385+ sensor
Section 6: Accessories
Part Number Description11275-01 Handrail mounting assembly (Code 03, 04 only)
23550-00 Remote J-Box without preamplifier (Code 02, 03 only)
23555-00 Remote J-Box with preamplifier, (Code 04 only)
23166-00 Process connector, 316SS, insertion/submersion 1 in. MNPT (Code 02, 03, 04)
23166-01 Process connector, titanium, insertion/submersion 1 in. MNPT (Code 02, 03, 04)
9510066 Process connector, Nylon, submersion only, 1 in. MNPT (Code 03, 04)
9210012 Buffer solution, 4.01 pH, 16 oz
9210013 Buffer solution, 6.86 pH, 16 oz
9210014 Buffer solution, 9.18 pH, 16 oz
12707-00 Jet Spray Cleaner for submersion service
23566-00 Sensor Tube, pH, Pt 100, Titanium, Low Resistance Glass
23566-01 Sensor Tube, pH, Pt 100, Titanium, High pH
23566-02 Sensor Tube, ORP, Pt 100, Titanium, General Purpose
23240-00 Ball Valve Assembly 316 Stainless Steel
23646-01 Cable, 12 Conductor, Shielded, Prepped
23557-00 Preamplifier, J-box
33046-00 Ferrule, 1 in. 316 SS, Split
9310096 Nut, Swage, 1 in. 316 SS
9310100 Ferrule, 1 in. TEFLON
9550099 O-ring, 2-214, VITON
Instruction Manual AccessoriesLIQ-MAN-385+ March 2017
30 Accessories
Accessories Instruction ManualMarch 2017 LIQ-MAN-385+
EC Declaration of Conformity 31
EC Declaration of ConformityNote: Please see website for most recent Declaration.
Instruction Manual EC Declaration of ConformityLIQ-MAN-385+ March 2017
32 EC Declaration of Conformity
EC Declaration of Conformity Instruction ManualMarch 2017 LIQ-MAN-385+
FM Installation 33
Intrisicallly Safe Sensor Installation Drawing - FM
ANY
FM A
PPRO
VED
ASSO
CIAT
ED A
PPAR
ATU
SH
AVIN
G E
NTI
TY P
ARAM
ETER
S
NO
N- H
AZA
RD
OU
S (U
NC
LASS
IFIE
D)
AR
EA
CLAS
S I,
II, II
I, D
IVIS
ION
1, G
ROU
PS A
-GT6
Ta
= 60
°C
SEN
SOR
ENTI
TY P
ARAM
ETER
SU
i =
13.1
U, I
i =
358
mA
Pi =
698
mW
Ci
= 0.
967
µF, L
i = 0
.1m
H
1. N
O R
EVIS
ION
TO
TH
IS D
RAW
ING
IS P
ERM
ITTE
D W
ITH
OU
TFM
APP
ROV
AL.
2. U
max
> U
t ; Im
ax >
I t; (
CiO
F AL
L LO
OPS
+ C
CAB
LE) <
Ca
;
(L i
OF
ALL
LOO
PS +
L C
ABLE
) < L
a, P
max
OR
Pi >
P0.
3. S
ING
LE M
ULT
I-CH
ANN
ELIS
BAR
RIER
OR
APPA
RATU
S M
UST
BE
FM A
PPRO
VED
,
4. S
ING
LE M
ULT
I-CH
ANN
ELIS
BAR
RIER
OR
APPA
RATU
S M
ANU
FACT
URE
'S
CO
NTR
OL
DRA
WIN
GS
MU
ST B
E FO
LLO
WED
WH
EN IN
STAL
LIN
G T
HE
SYST
EM.
IS B
ARRI
ER O
R EQ
UIP
MEN
T M
AY B
E IN
STAL
LED
WIT
HIN
TH
E H
AZAR
DO
US
(C
LASS
IFIE
D) L
OCA
TIO
N F
OR
WH
ICH
IT IS
APP
ROV
ED.
5. I
NST
ALLA
TIO
N M
UST
BE
IN A
CCO
RDAN
CE W
ITH
ART
ICLE
500
OF
THE
NEC
(
ANSI
/NFP
A 70
) AN
D A
NSI
/ISA
RP
12.6
.
WAR
NIN
G:
SUBS
TITU
TIO
N O
F CO
MPO
NEN
TS M
AY IM
PAIR
INTR
INSI
C SA
FETY
.
6. p
H &
AM
PERO
MET
RIC
SEN
SORS
WIT
HO
UT
PREA
MPS
ARE
SIM
PLE
APPA
RATU
S.
ZON
EZO
NE
0
7. C
ON
TRO
L EQ
UIP
MEN
T CO
NN
ECTE
D T
O T
HE
ASSO
CIAT
ED A
PPAR
ATU
S M
UST
N
OT
USE
OR
GEN
ERAT
E M
ORE
TH
AN 2
50V
.
RESI
STAN
CE B
ETW
EEN
INTR
INSI
CALL
Y SA
FE G
ROU
ND
AN
D E
ARTH
GRO
UN
D
MU
ST B
E LE
SS T
HAN
OR
EQU
AL T
O 1
OH
M.
ANY
FM A
PPRO
VED
TRA
NSM
ITTE
R FO
RD
IVIS
ION
1 W
ITH
INTR
INSI
CALL
Y SA
FEO
UTP
UT
PARA
MET
ERS.
TH
ISFM
APPR
OV
ED D
EVIC
E M
UST
BE
INST
ALLE
DPE
R IT
S IN
STAL
LATI
ON
DRA
WIN
G.
FMAP
PRO
VED
EQ
UIP
MEN
T (M
AY B
EM
ULT
IPLE
DEV
ICES
, NU
MBE
R IS
LIM
ITED
BY R
EQU
IREM
ENTS
TO
MEE
T AL
L O
THER
IS R
EQU
IREM
ENTS
FO
R TH
E N
ETW
ORK
)W
ITH
EQ
UIV
ALEN
T H
AZAR
DO
US
AREA
APPR
OV
ALS.H
AZA
RD
OU
S (C
LASS
IFIE
D) A
REA
INTR
ISIC
ALL
Y S
AFE
9. p
H/O
RP S
ENSO
R M
OD
ELS
THAT
MAY
CO
NTA
IN T
HE
PREA
MPL
IFIE
R:
3900
/VP
3500
/VP
3300
HT/
VP
3400
HT/
VP
396/
VP
396R
/VP
396P
/VP
398R
/VP
399/
VP
389/
VP
385/
385+
10.
WAR
NIN
G:
TO P
REV
ENT
IGN
ITIO
N O
F FL
AMM
ABLE
OR
CO
MBU
STIB
LE
AT
MO
SPH
ERES
, DIS
CON
NEC
T PO
WER
BEF
ORE
SER
VIC
ING
.
11.
TH
E EN
TITY
CO
NCE
PT A
LLO
WS
INTE
CON
NEC
TIO
N O
F IN
TRIN
SICA
LLY
SAFE
APPA
RATU
S W
ITH
ASS
OCI
ATED
APP
ARAT
US
WH
EN T
HE
FOLL
OW
ING
IS T
RUE:
Ui>
Uo;
Ii>
Io;
Pi>
Po;
Co
> C
i + C
CAB
LE; L
o>
Li +
L C
ABLE
.
12.
CO
PY R
EVIS
ION
S TO
140
0332
TO
pH
/ORP
SH
IPPI
NG
MAN
UAL
S.
13
Ci I
NCL
UD
ES T
HE
CAPA
CITA
NC
E O
F 50
0 FE
ET O
F SE
NSO
R C
ABLE
.
13
DW
G N
O.
1400
332
8.
Instruction Manual FM InstallationLIQ-MAN-385+ March 2017
LIQ-MAN-385+Rev. J
March 2017
Emerson
8200 Market Blvd.Chanhassen, MN 55317,USA Tel +1 800 999 9307Fax +1 952 949 7001
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The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a mark ofone of the Emerson family of companies. All other marks are the property of their respectiveowners.
The contents of this publication are presented for information purposes only, and while effort hasbeen made to ensure their accuracy, they are not to be construed as warranties or guarantees,express or implied, regarding the products or services described herein or their use or applicability.All sales are governed by our terms and conditions, which are available on request. We reserve theright to modify or improve the designs or specifications of our products at any time without notice.
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